George c



(No Model.)

.G. O. BLIOKENSDERPER. TYPE WHEEL FOR TYPE WRITING MACHINES.

No. 432,296. Patented July 15, 1890.

'lr' mifllLi v I mlun| /;a m".'!;f i=

1 w am Hi I z a t F 8 WITNESSES: L/VVIENTORW UNITED GEORGE o. lLlCKENSDERFER, or s'rA EoEn, oounnoriou'r,

TO THE BLICKENSDERFER 'MANUEAo'rURiNe.

YORK, N. i.

srncrrrcnrron forming part of Application filed m 5,

To all whom it may concern.

Be 1t known that I, GEORGE C. BLICKENS- DERFER, a citizen of the United States, resid- State of Connecticut, have invented certain new and useful Improvements in Type- Wheels for Type-WVriting the following is a specification. My invention relates generally to type-writmg wheel of that form which are rotatedby keys or 'key-levers to bring into position the desired letter or character to be printed or written, and particularly to that special form of the same which has a number of rows or fields, and the wheel is shifted to bring any one of these rows into impression position.

For type -wheels of the above-described character it is very desirable' that it should be very light in weight, as it is normally at a state of rest and the inertia of the wheel must be overcome dium of the key-levers. It follows, therefore, that the lighter the wheel the greater the ease with which its inertia will be overcome. The wheel, however, should not be lightened at the expense of strength and durability. This eel is is particularly the case where the wh shiftable upon its shaft to bring any one of fields-of characters contained upon the i v into position and, wherein the axial hub or sleeve for the shaft is more or less subject to a jarring motion due to making the impression and to the return of the sleeve to 'its normal position. 0

the difierent rows or 5 strengthen the wheel at its axial hub or sleeve 5 the impression- 59 wheel oi is one of the objects of my invention. Again,

by the fingers through the 1118- where the type-wheel is also used as a hamm'er to make the impression of the desired letter it is essential to strengthen the wheel radially. Arms or spokes radiating from a hulrwill not answer the purpose, as that part' of the periphery between the arms or spokes would havwgethim .to support itand the concussion due to the low of thewvheel against roller o r platen'w'ould soon the wheel out of shape or break. it. To strengthen the wheel at this point is another object of my invention. These objects are accomplished by making a hollow hard rubber or a ogous suitable either twist ASSIGNOR COMPANY, OF NEXY -WRlT.lNG MAcHiNEs.

Letters Patent No, 432,296, dated July 15, 1890.

1889- smnuo. 316,687. illomodel.)

material'and entirely closing the space at the top and the bottom of the wheel between the perimeter of the wheel and its hub or sleeve by solid webs. 1 V Myirwention has for its further object to provide a cheap, light-weight, strong, an durable type-wheel having several or a nunr ber of rows or fields of characters on its periphery by forming the hub or sleeve, the periphery, the top and bottom webs connecting the sleeve and periphery o well as the rows or wheel integral or in one piece. 4 My invention has for its still further object to increase the scope of the type-wheel, and to this end I place-upon the wheel. one, two, or more letter words, so arranged that the letters of each zontal line, so that when an impression of the word is made the word type or character will strike the paper or platen evenly from end to end ofthe ,word. The word characters eona separate field or row,

snmte, preferably, field, and each. word on the periphery chords or segments for-words,

of a series of while the remaining part is circular for single lettersand other single characters.

part of the periphery of the wheel is made up The invention consists of constructions andcombinations comprising a type-wheel, as will hereinafter be particularly described in the specificatiomand pointedout in the claims.

Reference is to be had to the accompanying drawings, inwhich Figure 1 represents the wheel in section and its shaft, the supporting-arm, and guide in elevation. Fig. 2 represents" an elevation of the wheel, guide, part or the tilting frame, and a sleeve having lifting-arm for the wheel; and Fig. 3, a horizontal section of the wheel through a word-row. 1 p a A represents the type-wheel, which in the drawings is represented mounted loosely upon a shalt B, and supported thereon by an arm 0, carrying a vertical guide-pin c of some its shaft, the supporting-arm, Y

word will be upon the same horilie length, which presses into a hole a in the type-wheel to permit the latter tobe adjusted or shifted vertically on said shaft to bring:

' any of the rows or fields on the type-wheel impression, and upon one of the side bars d of .frame D is a sliding sleeve 61, carrying an arm (2 which loosely embraces an annularv groove 0. at one end of the axial hub a or sleeve of the type-wheel, so as not to interferewith the rotation of the type-wheel on the shaft and to admit of the wheel being shifted vertically, as shown and described in another pending application filed by me of an even date herewith, Serial No. 316,591.

The wheel consists of a periphery a an J axial hub or sleeve a solid top and bottom webs a a connecting the. periphery o. and sleeve or hub a and rows or fields of characters on periphery a all of which are formed in one piece to make a hollow type-wheel having solid webs, and it is made of hard rubber or other suitable analogous material.

The manner of forming this wheel is substantially as follows: Wedge-shaped dies having their apices formed upon a concave line with the desired character in infnzglr'o and forming when put togethera cylindrical openin g are arranged on a base-plate having a stem to form 'the axial opening. The inside of these parts is covered with the proper plastic compound, as is also the inside of a cap-plate which closes theupper part of the mold. A little water is placed in the mold before the parts are clampedv together, and when clamped placed in afurnace and heated to a sufficient temperatureto make the water turn to steam, which forces the rubber into all the interstices of the mold, where it hardens. After the mold has remained in the furnace a sufficient time it is taken out and the clamps removed from the mold, so that the dies can beremoved without the characters onthewheel being i nginred.- .It is obvious that anyd esirecl' character can by this means be cast orblown uponor integral with the wheel. In many cases, especially where two or more letter words are used, the space in which the words are cast can be 50- arranged that the faces of the letters of each word will be upon the same horizontal line, so that when an impression is made the word type or char actor will strike the paper evenly from end t; end of the same. The space, for the word. is

varied to suit the nnmbertof letters in the;

tically on its shaft. -ous bracing for the perimeter'a and the hub {sisting of an axialhub or sleeve, and top and bottom solid webs between said word an'd'is always formed in alineeg'rsre spending to thechord of a segmentpf a so that the printing of the words. will .be uniform. The single letters or characters are formed on circular parts or surface of the .periphery of the .wheel, as is usual, so that the surface of the periphery of the type-wheel is partly circular and partly made up of chords of segments of circles, varying in length to correspond with the number of letters in the word. I

For rapidity of writing words or like characters I prefer to'assemble all the words in one or more rows containing onlyword characters and called word-rows, and the surface of the periphery of the wheel for the wordrows will consist of a series of varying lengths of chords or segments of circles, as more plainly shown in Fig. 3, while that for the single letter or character rows will be circular or round, as is usual. I

Froni the foregoing it will be noted that as the webs a a of the type-wheel are in the form of solid disks which close both ends of the wheel completely, the perimete'rtt of the wheel will have a continuous brace between it and the axial hub or sleeve, and the latter is correspondingly braced. The type-wheel is therefore of light weight, so that its inertia is easily overcome and its axial hub or sleeve as well as the perimeter a are strengthened to resist the concussion due to the blow .of thewheel upon the platen when said wheel is used as a hammer and to the shifting of! the wheel when it is arranged 'to move ver- The described continua of the type-wheel permits of cutting away or forming the chords of segments of circles on the type-wheel periphery a for the word characters without weakening said periphery when'it has a narrow width in cross-section,-

as more fully illustrated in Fig. 3 of the drawings, such narrow width of cross-section keep- .ing down the weight of the type-wheel opening a for the guide-pin c, as shown in the drawings, is'formed in the lower web a,

and this opening also permits the fiuidand .While I have illustrated the special form tween the type-wheel and its shaft and shift- The ,gases, ifany remain after the wheel ismade,

to escape from the interior thereof. 115' ing connection .for the type-wheeL'I do not limitmyself thereto, 'as it is evident that any or allof said parts may be varied to suit different kinds or makes of type-wheel writingmachines, and are he rein only shown as one Y form of the same for use with a shiftable rotating and oscillating type-wheel embodying my improvements, said type-wheel it is obvious, being applicable for use in various kinds or makes of type-wheel writing-machines.

\Vhat Iclaim' is g 1. A hard-rubber hollow type-wheel conaxial hub or sleeve and periphery formed in, one piece, substantially as set forth, j

a periphery periphery,

2. A Laid-rubber hollow type-wheel consisting of an'a-Xial hub or sleeve, a periphery,

top and bottom solid webs between said axiahub or sleeve and periphery, and oneor more rows or fields of type or characters on said periphery formed in one piece, substantially set forth. 7

3. A hard-rubber hollow type-wheel consisting of an axial hub or sleeve, a periphery, top and bottom solid webs between said axial hub or sleeve and periphery, and one orin'ore rows or fields of type or characters on said and part of said periphery being circular and partof it corresponding to chords ot segments of circles for Word type or characters, substantially as set forth.

4. A hard'rubber hollow annular type-wheel consisting of an axial hub or sleeve, aperiphery, top and bottom webs connecting said axialhub or sleeve and periphery, and one or more rows or fields of typeor characters, part of which type or characters are logotypes or words, substantially as set forth.

5. A hard-rubber hollow type-wheel consist-ing of an axial hub or sleeve, a periphery, top and bottom solid webs between said axial hub and periphery, an annular groove (1, in said hub exterior to one of said webs, and all of said parts formed in one part, substan- I tially as set forth. 7

In testimony whereoE I ailix my signature in presence of two witnesses.

GEORGE C. l \Vitnesses: J. VAN STAVOREN; CHAS. F. VAN Hons.

BLICKEN SDERFER. 

